ZREMRANGEBYSCORE command in redis

ZREMRANGEBYSCORE key min max

Remove all the elements in the sorted set at a key with a score between min and max (including elements with a score equal to min or max).

TIME COMPLEXITY: O(log(N))+O(M) with N being the number of elements in the sorted set and M being the number of elements removed by the operation.

RETURN VALUE: Integer reply, specifically the number of elements removed.

Syntax:

ZREMRANGEBYSCORE key min max

Example 1: When the key is present and min and max in the range.

redis:6379> ZADD mykey 1 A 2 B 3 C 4 D 5 E
(integer) 5
redis:6379> ZREMRANGEBYSCORE mykey 1 3
(integer) 2

Output

2

Example 2: When the key is not present or min and max is out of range.

redis:6379> ZADD mykey 1 A 2 B 3 C 4 D 5 E
(integer) 5
redis:6379> ZREMRANGEBYSCORE myredisKey 1 4
(integer) 0
redis:6379> ZREMRANGEBYSCORE mykey 10 20
(integer) 0

Output

0